P0100Średni
Obwód czujnika masowego przepływu powietrza (MAF) — usterka
Układ napędowy
Sprawdź szczegóły →P1100
ŚredniMass Air Flow (MAF) Sensor Malfunction – Incorrect Signal or Intermittent Reading. Manufacturer-specific code with different definitions depending on the vehicle make.
OBD-II (EN): Mass or Volume Air Flow Sensor Circuit Malfunction
Code P1100 is a manufacturer-specific error, most often indicating a malfunction of the mass air flow sensor (MAF) or – depending on the make – the intake manifold pressure sensor (MAP/BARO). Symptoms include power loss, increased fuel consumption, and unstable engine operation. Due to the different definitions of this code across various vehicle makes, professional diagnosis is recommended to correctly identify the source of the fault.
Symptoms
Check Engine Light (MIL) on the dashboard Decrease in engine power and worsened acceleration Increased fuel consumption Unstable engine idle (vibrations, jerking) Increased exhaust emissions Possible difficulty starting the engine In some models (Ford, Citroen, Peugeot): failure to complete OBD-II system readiness tests
Possible causes
Contaminated or faulty MAF sensor (mass air flow) Broken or damaged MAF sensor signal wire Poor electrical connections or corrosion at the sensor connector Leak in the intake air system (cracked hoses, leaking air filter) Damaged air filter causing MAF sensor contamination Intermittent MAF sensor signal caused by vibrations or temperature In Toyota/Lexus/Scion models: fault in the barometric pressure sensor (BARO) In Hyundai models: short circuit in the MAP sensor (manifold absolute pressure) In Mitsubishi models: fault in the control valve position sensor In Subaru models: fault in the initialization switch circuit In BMW models: MAF sensor input signal too high
Affected systems
Układ dolotowy powietrzaCzujnik MAF (masowego przepływu powietrza)Czujnik MAP (ciśnienia bezwzględnego)Zarządzanie silnikiem (ECU/PCM)Układ paliwowyUkład emisji spalin
Related codes
P0105Średni
Czujnik ciśnienia w kolektorze ssącym (MAP) — usterka obwodu
Układ napędowy
Sprawdź szczegóły →P0101Średni
Czujnik MAF — zakres/wydajność poza normą
Układ napędowy
Sprawdź szczegóły →Code P1100 appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Does code P1100 require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.